Bought a Klein Bottle (Klein Stein) for Dad.... great e-mail and pictures from Dr. Stoll.

"The box oughta arrive on Saturday February 13, give or take an aeon. Perhaps a bit later, what with the weather, the economy, global warming, continental drift, and the expansion of the universe." ... "So, from across the Rockies and around our three spatial dimensions, here's my one-sided cheers to you."